package main

import "fmt"

func main()  {
	var s1 []int
	fmt.Printf("%p, %v\n", &s1, s1)
	s1 = append(s1, 1)
	fmt.Printf("%p, %v\n", &s1, s1)
	s1 = nil
	fmt.Printf("%p, %v\n", &s1, s1)
	s1 = append(s1, 1)
	fmt.Printf("%p, %v\n", &s1, s1)
}
